PolymitaPay
A catalog and payments layer for MCP tools — AI agents pay per call automatically, no API keys, no subscriptions.
PolymitaPay
is a catalog and payments layer for MCP (Model Context Protocol)
tools. An AI agent installs an MCP client —
wallet-mcp-server
— searches the catalog for the tool it needs, and pays per call
automatically via the x402 protocol,
settled on the XRP Ledger. No accounts to
create, no API keys to manage, no subscriptions — and it's
non-custodial, so the agent's wallet stays under its own control.
How it works
- Discover: the agent searches the catalog for MCP tools that match what it needs.
- Request: it calls the tool; if payment is required, the server responds with an HTTP 402 and a price.
- Pay and retry: the agent's wallet signs the payment on XRPL and retries the request — settled instantly, per call.
Main Technologies Used
- MCP
- x402
- XRPL
- TypeScript
- Node.js